摘要:
The present invention provides ketals of 3'"-dehydrocardenolide tridigitoxosides of the general formula: ##STR1## in which R.sub.1 and R.sub.2 are identical alkyl radicals containing up to 3 carbon atoms or together represent a cyclic ketal containing 2 to 6 carbon atoms, R.sub.3 represents two hydrogen atoms, the group ##STR2## or the radical ##STR3## wherein R.sub.1 and R.sub.2 have the above-given meaning, and R.sub.4 is a hydrogen atom or a lower acyl or alkyl radical.The present invention also provides processes for the preparation of these ketals, as well as pharmaceutical compositions containing them, which are useful for the treatment of cardiac insufficiency.
摘要:
A piperidinopropyl derivative of the formula ##STR1## in which R.sub.1 and R.sub.2 each independently is hydrogen or a lower alkyl radical, or together are an alkylene radical,R.sub.3 is hydrogen, hydroxy, or acyloxy,R.sub.4 is hydrogen or formyl,A together with the adjacent benzene ring and N-R.sub.4 forms a benzimidazolin-2-one, benzimidazoline-2-thione, oxindole, indazole carbazole, benztriazole, benzimidazole, indoline or indole moiety, andB is a heterocyclic radical or, under certain circumstances, a phenyl radical, either of which is optionally substituted by halogen, hydroxy, lower alkyl, hydroxy-lower alkyl, carboxamido-lower alkyl, lower alkoxy, amino, carboxamido, lower alkyl-carbonylamino, acyl or lower alkylsulphonylamino,or a pharmacologically acceptable salt thereof. The compounds inhibit adrenergic .beta.-receptors and lower blood pressure.
摘要:
The present invention provides 3'"-dehydrocardenolide tridigitoxoside oximes of the general formula: ##STR1## in which R.sub.1 is a hydrogen atom or an alkyl radical containing up to 3 carbon atoms, R.sub.2 is a hydrogen atom or a lower acyl or alkyl radical and R.sub.3 represents two hydrogen atoms, the group ##STR2## or the oximino group .dbd.NOR.sub.1, wherein R.sub.1 has the above-given meaning.The present invention also provides a process for the preparation of these oximes, as well as pharmaceutical compostions containing them which are useful for the treatment of cardiac insufficiency.
摘要:
Cardioactive cardenolide-bis-digitoxosides of the formula ##STR1## in which R.sub.1 is a hydrogen atom, a hydroxyl group or an acyloxy radical containing up to 3 carbon atoms, andR.sub.2, R.sub.3 and R.sub.4 each independently is a hydrogen atom, an acyl radical containing up to 3 carbon atoms,with the proviso that the compound contains at least one alkyl radical. The compounds exhibit desirable rates of excretion, primarily extrarenally.
摘要:
A pyruvic acid hydrazone derivative of the formula: ##STR1## wherein R is an aryl radical optionally substituted by lower alkyl or is an aliphatic hydrocarbon radical which can be substituted by a lower alkoxy, a cycloalkyl or an optionally substituted aryl radical,A is an alkylene radical containing 2 to 8 carbon atoms, with at least 2 carbon atoms between B and the nitrogen atom, andB is an oxygen or sulphur atom;or a physiologically acceptable salt, ester or amide thereof which possesses hypoglycaemic activity.
摘要:
The present invention provides 12-dehydrodigoxin oximes of the general formula: ##STR1## wherein R.sub.1 and R.sub.2, which can be the same or different, are hydrogen atoms, lower acyl radicals or lower alkyl radicals or R.sub.1 and R.sub.2 together can represent an alkylidene radical containing 2 to 6 carbon atoms and R.sub.3 is a hydrogen atom or a lower alkyl or aralkyl radical. The present invention also provides a process for the preparation of these oximes and pharmaceutical compositions containing them and is also concerned with the use of these oximes for the preparation of pharmaceuticals for the treatment of cardiac insufficiency.